A growing niche in the restaurant business is gourmet casual breakfast, lunch, and brunch. Chains in this
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a. Assuming a standard deviation of $2.00, what sample size is needed to estimate, with 95% confidence, the mean per person check for EggSpectation to within ±$0.25?
b. Assuming a standard deviation of $2.50, what sample size is needed to estimate, with 95% confidence, the mean per person check for EggSpectation to within ± $0.25?
c. Assuming a standard deviation of $3.00, what sample size is needed to estimate, with 95% confidence, the mean per person check for EggSpectation to within ±$0.25?
d. Discuss the effect of variation on the sample size needed.
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Related Book For
Statistics For Managers Using Microsoft Excel
ISBN: 772
7th Edition
Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat
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